38840628 has 24 divisors (see below), whose sum is σ = 93754080. Its totient is φ = 12500320.

The previous prime is 38840623. The next prime is 38840651. The reversal of 38840628 is 82604883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38840623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55458 + ... + 56153.

It is an arithmetic number, because the mean of its divisors is an integer number (3906420).

Almost surely, 2^38840628 is an apocalyptic number.

It is an amenable number.

38840628 is an abundant number, since it is smaller than the sum of its proper divisors (54913452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38840628 is a wasteful number, since it uses less digits than its factorization.

38840628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111647 (or 111645 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 38840628 is about 6232.2249638472. The cubic root of 38840628 is about 338.6585784712.

The spelling of 38840628 in words is "thirty-eight million, eight hundred forty thousand, six hundred twenty-eight".